METHOD AND DEVICE FOR SPRAYING POWDER MATERIALS Russian patent published in 1998 - IPC

FIELD: physico-chemical analysis in laboratory and Manufacturer's tests. SUBSTANCE: in the course of pneumatic spraying gas is fed by high-velocity pulse portions. To ensure turbulization of gas flow, it is subjected to repeated abrupt expansion in the course of motion. Device for realization of this method simultaneously provides for proportioning powder material fed from supply bin by means of proportioning nozzle connected with compressed gas source and transportation line by means of main. Portion of powder fed from supply bin to calibrated nozzle fitted in transportation main is finally sprayed in receiving bin. Proposed method provides for maximum degree of crushing particles when size of portion is not limited. EFFECT: enhanced reliability. 3 cl, 2 dwg